I have some sheep house for lambing later in month , been in 3 weeks now as was wet ground . Been doing grand getting sheep rolls good new grass haylage & access to high energy licks . This morning at feeding 2 holding back , one lying down not flat out other standing hanging both ears . Couldn’t work out if listeria or twin lamb, phoned vet described symptoms etc she decided twin lamb so sat out meds for me . Jagged them& administered glycol. By 3pm one was going about more life like other one flat out not looking great . By 5pm stone dead ! Just think it seems a quick death , have seen both listeria or twin lamb go on for days on end . I know it’s just sheep but little concerned. Sheep were carrying twins, regular ages & good condition not over far not too thin